The regulations, restrictions and boundaries established in this ordinance may, from time to time, be amended, supplemented, changed, modified, or repealed by the governing body, provided:

13-1-1.

The planning commission shall hold at least one public hearing on such proposed amendment after notice as required by Code of Virginia, § 15.2-2204, and may make appropriate changes in the proposed amendment as a result of such hearing. Upon the completion of its work, the commission shall present the proposed amendment to the governing body together with its recommendations and appropriate explanatory materials.

13-1-2.

Before approving and adopting any amendment, the governing body shall hold at least one public hearing thereon, pursuant to public notice as required by Code of Virginia, § [15.2-2204], after which the governing body may make appropriate changes or corrections in the proposed amendment: provided, however, that no additional land may be zoned to a different classification than was contained in the public notice without an additional public hearing after notice required by Code of Virginia, § 15.2-2204. An affirmative vote of at least a majority of the members of the governing body shall be required to amend the zoning ordinance.